Re: [large/complex projects] conditional header values and/or book name

[Kieren MacMillan]

 Hi Sam,

Thanks for these thoughts!

> I'm not sure if this fits under your umbrella of having a single top level 
> file, but what about this?
> 
> %%%% song-FV.ly
> definedVariables = data
> \include song.ily
> 
> %%%% song-SV.ly
> definedVariables = data
> \include song.ily
> 
> %%%% song.ily
> \include [.ily files containing the notes, edition-engraver tweaks, etc.]

Different versions will share some tweaks and also have individual/unshared 
tweaks, so I can’t quite tell yet whether this structure would be sufficient 
(never mind optimal).

> \header {
>   [header parameters shared by both versions]
>   [differing header parameters defined in global variables]
> }
> 
> \score {
>   [contexts built from variables defined in \include-d files]
> }
> %%%%
> 
> Optionally, you could use the output names and book blocks so that you can 
> compile the whole work from a FullVersion.ly and ShortVersion.ly which are 
> basically a series of includes of the applicable songs.

The full book (e.g. “Piano/Conductor Score” will definitely be a series of 
includes of applicable songs. I’m trying to figure out how to structure all 
this with the least amount of duplication (in note code, tweak code, and score 
code).

Thanks,
Kieren.
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